Phaser 6121MFP Service Manual 4-27
General Troubleshooting
Control Panel Indicators Do Not Light
No Control Panel or Faulty Indicator lights.
Initial Actions
• Remove system power and reboot.
• View any control panel activity.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Image Processor Board,
PL13.0.29/30
■ Control Panel Board, PL2.0.5
■ Power Supply 1, PL13.0.17
■ Board Locations (page 2-10)
■ Map 1 - Engine Control Board Plug/Jack
Locator (page 10-5)
■ Power Supply Wiring (page 10-17)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Is power source voltage being applied
to connector CN3 of the Power Supply?
Go to step 2. Check wiring
from the AC
power plug
through the
Power Switch
to CN1 (pin 1)
of the Power
Supply. If
problem
persists, go to
step 2.
2 Are fuses (F1 and F2) on the Power
Supply conducting?
Go to step 3. Replace the
Power Supply
(page 8-72). If
the problem
persists, go to
step 3.
3 Is P/J1 on the Engine Control Board
seated properly?
Go to step 4. Reseat the
connector. If
the problem
persists, go to
step 4.
4 Is P/J10 on the Image Processor Board
properly connected?
Go to step 5. Reseat the
connector. If
the problem
persists, go to
step 5.
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